Het archief bekijken van vrijdag 26 februari 2016

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2016 Feb 26 1230 UTC

SIDC Prognose

Zonnevlammen

Quiet conditions (<50% probability of C-class flares)

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Quiet

	10cm flux	Ap
26 Feb 2016	090	013
27 Feb 2016	090	017
28 Feb 2016	090	015

Bulletin

Solar activity was low. Catania group 27 (NOAA 2506) produced the two largest flares of the period. A C1 flare peaking at 9:51UT and a B8 flare peaking at 19:56UT. 3 new regions were numbered by Catania. Two of them emerged on disk: group 28 (NOAA 2507) around N18W49 and group 29 (NOAA unnumbered) around S26E15. A third group (30) rotated on disk in the NorthEast. Neither of the new regions appears particularly complex. Solar flaring is expected to remain below C level although an occasional C flare remains possible. No Earth directed CMEs were recorded.

Solar wind conditions showed the passage of a sector boundary crossing into the positive sector before midnight with an associated period of increase of total magnetic field to around 13 nT. Bz was variable reaching down to -8nT. The sector boundary crossing also marked the start of a phase of continuous rise of the solar wind speed from near 300 km/s to 420 km/s. Solar wind speed is expected to rise somewhat further under the influence of the extensions of the northern polar coronal hole. Quiet to unsettled geomagnetic conditions were recorded (NOAA Kp 3 after midnight). As solar wind speed may become further elevated, further periods of unsettled geomagnetic conditions are possible.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 053, gebaseerd op 08 stations.

Zon indexen voor 25 Feb 2016

Wolfgetal Catania	///
10cm zonneflux	092
AK Chambon La Forêt	019
AK Wingst	006
Geschatte Ap	006
Geschat internationaal zonnevlekkengetal	027 - Gebaseerd op 21 stations

Overzicht opvallende gebeurtenissen

Aangeboden door het Solar Influences Data Analysis Center© - SIDC - Verwerkt door SpaceWeatherLive

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